Tic Tac Toe Ultimate

Jouer le jeu ultime Tic Tac Toe (ou morpion) avec compagnon ou bot.

Play the Tic Tac Toe Ultimate game (also called Noughts and Crosses) for free online with mate or bot.

Actually this game gives you a chance to show your brain and problem solving ability!

Who will be faster and clever - will win!

Strategy

Optimal strategy for player X. In each grid, the shaded red X denotes the optimal move, and the location of O's next move gives the next subgrid to examine.

Note that only two sequences of moves by O (both starting with center, top-right, left-mid) lead to a draw, with the remaining sequences leading to wins from X.

Optimal strategy for player O. Player O can always force a win or draw by taking center. If it is taken by X, then O must take a corner

A player can play a perfect game of tic-tac-toe (to win or, at least, draw) if they choose the first available move from the following list, each turn, as used in Newell and Simon's 1972 tic-tac-toe program.[14]

Win: If the player has two in a row, they can place a third to get three in a row.

Block: If the opponent has two in a row, the player must play the third themselves to block the opponent.

Fork: Create an opportunity where the player has two threats to win (two non-blocked lines of 2).

Blocking an opponent's fork:

Option 1: The player should create two in a row to force the opponent into defending, as long as it doesn't result in them creating a fork. For example, if "X" has two opposite corners and "O" has the center, "O" must not play a corner in order to win. (Playing a corner in this scenario creates a fork for "X" to win.)

Option 2: If there is a configuration where the opponent can fork, the player should block that fork.

Center: A player marks the center. (If it is the first move of the game, playing on a corner gives the second player more opportunities to make a mistake and may therefore be the better choice; however, it makes no difference between perfect players.)

Opposite corner: If the opponent is in the corner, the player plays the opposite corner.

Empty corner: The player plays in a corner square.

Empty side: The player plays in a middle square on any of the 4 sides.

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